MCI to IAH flight delays & on-time performance
Nonstop flights from Kansas City International Airport to George Bush Intercontinental Airport · 643 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MCI or IAH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Kansas City (MCI) to Houston (IAH) arrived on time 86% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.6% were cancelled, and 5% arrived an hour or more late.
- Departures scheduled around 8am did best (87% on time); around 2pm did worst (84%).
- Wednesday was the most reliable day to fly (99% on time) and Sunday the least (80%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (56%).
Which airline is most on time from MCI to IAH?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 87% | 0.6% | 10 min | 4.6% | 480 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 67% | 0.0% | 17 min | 16.7% | 6 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am85%147 flights
- 8am87%286 flights
- 2pm84%44 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%0.0% cancelled
- Tuesday88%0.0% cancelled
- Wednesday99%0.0% cancelled
- Thursday86%0.0% cancelled
- Friday87%2.9% cancelled
- Saturday83%1.4% cancelled
- Sunday80%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)56%
- Air traffic control & airport congestion32%
- Late-arriving aircraft9%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)67%
- Extreme weather33%
- Air traffic control & airport congestion0%
- Security0%
MCI to IAH: common questions
- How often are MCI to IAH flights on time?
- 86% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Kansas City to Houston cancelled?
- 0.6% of scheduled flights were cancelled (3 of 486).
- How long are typical delays?
- Across all flights the average arrival delay was 10 min (early arrivals count as zero). Flights that were late arrived 69 min behind schedule on average, and 4.8% of flights were an hour or more late.
- How long is taxi time at MCI?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAH to MCI — 77% on time
More flights from Kansas City
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MCI → IAH, nonstop flights by US airlines that report to the DOT. How we calculate this.